42U of the cabinet, up to the number of 24 switches can be placed
Some of the cabinet below the fiber patch panel, if any, but also take about 4 U a fiber patch panel accounted for 2 U
Switches are generally the most commonly used only 1U. So 42% 3 = 14, can put up to 12 switches
There are several specifications switch, 1U 2 U 3U, patch panels and cable management are only 1U
The key to see which equipment inside the cabinet to put.A switch is equipped with at least one cable management frame